Anyone else running custom firmware on their M21S? Drop your efficiency numbers below.

: Obtain the correct .bin file from the MicroBT official website. Ensure the version matches your specific control board type (H3, H6, etc.).

: Always ensure you are downloading from official or highly reputable sources to avoid malware that could redirect your mining rewards.

For standard operations, users should prioritize official releases from the WhatsMiner Official Website . Resource Type Source & Utility

The update process is typically handled through the , the official management software for Windows.

: Third-party developers offer "overclocking" or "auto-tuning" firmware. These versions often allow for higher hashrates or better efficiency (Joules per Terahash) by fine-tuning the voltage of individual ASIC chips, though they may involve developer fees (devfees). 2. Key Benefits of Updating

: If using custom firmware to overclock, ensure your facility has adequate airflow. The M21S can consume significantly more power and generate intense heat when pushed beyond factory specs.